User Documentation
Table Of Contents
- 1.1 Revision history
- 1.2 Validity
- 1.3 Contact address
- Table of contents
- 2. Observed standards
- 3. Acronyms and abbreviations
- 4. Purpose of the product
- 5. Assumptions and restrictions for use of the product
- 6. Functional specification of the safety functions
- 7. Functional specification of the non-safety functions
- 8. Safety parameters
- 9. Failure category SIL 2
- 10. Hardware and software configuration
- 11. Periodic proof test procedure
- 12. Procedures to repair or replace the product
- 13. Maintenance
- 14. Connection diagram
Failure category SIL 2
12 1482850000/01/11.2017
9. Failure category SIL 2
Failure rates according to IEC 61508
Total failure rate for dangerous detected failures (λ
DD
)
127 FIT
Total failure rate for dangerous undetected failures (λ
DU
)
48 FIT
Total failure rate for all safe failures (λ
Safe
)
164 FIT
FIT = 10
-9
h
-1
(Failure in time)